The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2013
Filed:
Dec. 08, 2010
Cagri Balkesen, Zurich, CH;
Markus Buehler, Weil im Schoenbuch, DE;
Rainer Dorsch, Herrenberg, DE;
Guenther Hutzl, Sindelfingen, DE;
Michael W. Kaufmann, Stuttgart, DE;
Daniel Pfefferkorn, Rostock, DE;
David Rohr, Mannheim, DE;
Stefanie Scherzinger, Boeblingen, DE;
Thomas Schwarz, Stuttgart, DE;
Cagri Balkesen, Zurich, CH;
Markus Buehler, Weil im Schoenbuch, DE;
Rainer Dorsch, Herrenberg, DE;
Guenther Hutzl, Sindelfingen, DE;
Michael W. Kaufmann, Stuttgart, DE;
Daniel Pfefferkorn, Rostock, DE;
David Rohr, Mannheim, DE;
Stefanie Scherzinger, Boeblingen, DE;
Thomas Schwarz, Stuttgart, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention relates to a method and respective system for operating a DRAM main memory. One buffer line is provided for multiple pages. When writing data to the buffer it is decided which to which buffer-line the data is written to based on its destination main memory address. A tuple consisting of lower memory address and data is stored. Data entered into the buffer-line will be sorted by page in case the line is flushed to the main memory. Sorting the buffer entries results in less page openings and closings, since the data is re-arranged by memory address and therefore in logical order. By using one line for multiple pages only a fraction of memory of a common set-associative cache is needed, thus decreasing the amount of overhead significantly.